URL:
<http://savannah.nongnu.org/bugs/?36350>
Summary: FUSE4_DEFAULT wrong for Xmega A devices
Project: AVR C Runtime Library
Submitted by: joerg_wunsch
Submitted on: Mon 30 Apr 2012 01:50:42 PM CEST
Category: Header
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Header files
Status: None
Percent Complete: 0%
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
Release: 1.7.1
Fixed Release: None
_______________________________________________________
Details:
j@uriah 55% fgrep FUSE4_DEFAULT include/avr/iox*
include/avr/iox128a1.h:#define FUSE4_DEFAULT (0xFF)
include/avr/iox128a3.h:#define FUSE4_DEFAULT (0xFF)
include/avr/iox128d3.h:#define FUSE4_DEFAULT (0xFF)
include/avr/iox16a4.h:#define FUSE4_DEFAULT (0xFF)
include/avr/iox16d4.h:#define FUSE4_DEFAULT (0xFF)
include/avr/iox192a3.h:#define FUSE4_DEFAULT (0xFF)
include/avr/iox192d3.h:#define FUSE4_DEFAULT (0xFF)
include/avr/iox256a3.h:#define FUSE4_DEFAULT (0xFF)
include/avr/iox256a3b.h:#define FUSE4_DEFAULT (0xFF)
include/avr/iox256d3.h:#define FUSE4_DEFAULT (0xFF)
include/avr/iox32a4.h:#define FUSE4_DEFAULT (0xFF)
include/avr/iox32d4.h:#define FUSE4_DEFAULT (0xFF)
include/avr/iox64a1.h:#define FUSE4_DEFAULT (0xFF)
include/avr/iox64a3.h:#define FUSE4_DEFAULT (0xFF)
include/avr/iox64d3.h:#define FUSE4_DEFAULT (0xFF)
Xmega A (as well as Xmega B) device have JTAGEN programmed in
FUSE4, so their default ought to be 0xFE.
This bug results in an application using:
FUSES =
{
.FUSEBYTE0 = FUSE0_DEFAULT,
.FUSEBYTE1 = FUSE1_DEFAULT,
.FUSEBYTE2 = FUSE2_DEFAULT,
.FUSEBYTE4 = FUSE4_DEFAULT,
.FUSEBYTE5 = FUSE5_DEFAULT,
};
and then accidentally programming all fuses (like through the
"ELF production file" in AVR Studio) in a batch erroneously
turngin off their JTAG access.
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